I thought I was using it wrong but it looks like I'm not alone with some of these Amazon reviews: https://www.amazon.com/Vallejo-Gloss-Black-Primer-200ml/dp/B013WXHQNA/ref=sr_1_2?crid=34GS5TANR03T3&keywords=vallejo+gloss+black+primer&qid=1649033254&sprefix=Vallejo+gloss+black+%2Caps%2C83&sr=8-2

I only use acrylic paints because I paint indoors.